ORGANS FOR SPERM-TRANSFER 243 
Fig. 1 Posterior face of the left fifth leg of a living male 95 mm. long to show 
the translucent papilla. (P.) 2. do. 
Fig. 2 Longitudinal section through the papilla and the base of the fifth leg, 
showing the orifice of the sperm duct, the valve, the muscles and the glands. 
2. 90mm. A. 
